Sadagopan (better known as Chitralaya Gopu) is an Indian screenwriter and director who works in the Tamil cinema.

[2] He scripted dramatic films such as Moondru Dheivangal and Shanti Nilayam and comedies such as Kadhalikka Neramillai, Galatta Kalyanam, Patti Sollai Thattathe and Uttharavindri Ulle Vaa.

[3] C. V. Sridhar and Sadagopan were childhood friends since their schooldays in St. Joseph's High School, Chengalpattu.

[5] Later, when Sridhar had the opportunity to direct a film, he asked Sadagopan to join him and produce the comedy track.

[6][7] The film Kalyana Parisu (1959) was a hit and Sridhar started his own production house, Chitralaya.